Materials Literature
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The core level and valence band spectra of group IVA elements were investigated with hard x-ray photoemission spectroscopy (HAXPES) photon energy of 7.939 keV by bulk sensitive manner. The survey and valance band spectra were presented, relative peaks intensity are discussed by thinking about inelastic mean free path…
We present a persistent soft-X-ray-induced insulator-to-metal transition at room temperature for VO 2 thin films. Continuous soft X-ray irradiation renders the insulating electronic state metallic in the VO 2 thin films, which has been found by photoemission spectroscopy measurement. The observed transition is irrever…
Nanosized ZnO:Mg phosphors were synthesized through a controlled chemical reaction. X-ray diffraction patterns confirmed that Mg entered in a substitutive way in Zn sites. To investigate their thermoluminescence (TL) properties, some samples were exposed to beta-particle irradiation. The results reported here show tha…
We theoretically studied the electronic structure, magnetic properties, and lattice dynamics of a series of $3d$ transition-metal antiperovskite compounds AXM$_{3}$ by density function theory. Based on the Stoner criterion, we drew the magnetic phase diagram of carbon-based antiperovskites ACM$_{3}$. In the phase diag…
Over the past couple of decades there have been major advances in the field of nanoscience and nanotechnology. Many applications have sprouted from these fields of research. It is essential, given the scale of the materials, to attain accurate, valid and reproducible measurements. Material properties have shown to be…
Concrete sludge is an industrial waste slurry containing hydrated cement, aggregates, and water. In the current study, anion-exchange materials: ettringite, metaettringite, and Ca-Al layered double hydroxide were synthesized from concrete sludge, and tested to see if they could remove harmful anions (borate, fluoride,…
We theoretically propose a unidirectional dual-band circular polarizer using a subwavelength hybridized metamaterial. By fulfilling the critical requirements of left-/right-handed circular polarizer design at each band, the polarization handedness filtration can be flipped in the same structure at different operation…
We have developed a noble HAXPES measurement system, where the controls for sample manipulation and VG Scienta R4000 work together. The main part of the system is developed by spec. R4000 is controlled by sending commands from spec to the TCP server programed by LabVIEW with SESWrapper library. The command line interf…
Mechanical behavior of woven fabrics under tensile load is complex because their deformation could result from the combined effects of tension, compression, bending, and shear. In this study, the tensile behavior of woven fabrics is simulated using finite element method. The input parameters are the mechanical propert…
Carbon monoxide binds to hemoglobin much more tightly than does molecular oxygen,so CO is highly toxic to humans and animals. Oxidation of CO into CO2is a major solution to removal of carbon monoxide in air purification. CO is also a simple molecule and CO oxidation serves as a prototypical reaction for heterogeneous…
By finding local minima of a thermodynamic-like potential, we generate jammed packings of frictionless spheres under constant shear stress σ and obtain the yield stress σy by sampling the potential energy landscape. For three-dimensional systems with harmonic repulsion, σy satisfies the finite size scaling with the li…
A model-based fitting algorithm for electron energy-loss spectroscopy spectra is introduced, along with an intuitive user-interface. As with Verbeeck & Van Aert, the measured spectrum, rather than the single scattering distribution, is fit over a wide range. An approximation is developed that allows for accurate model…
In this work, the effects of post-treatments such as air-annealing (AA), light soaking (LS), and heat-light soaking (HLS) on the electrical properties of boron-doped ZnO (ZnO:B) films were investigated. The ZnO:B films were deposited by metal organic chemical vapor deposition (MOCVD) using diethyl zinc (DEZ), H 2 O, a…
Addition of yttria to steels has been proposed for the fabrication of oxide-dispersion-strengthened materials for nuclear power applications. We have investigated materials prepared from 12 Cr martensitic stainless steel, AISI 410L, produced by powder metallurgy. Materials were produced with and without yttria additio…
ABSTRACT The development of the plastic and viscoelastic properties and the corresponding failure limits of the acetal homopolymer polyoxymethylene were studied in unidirectional cyclic fatigue. Samples with molecular weights (MWs) ranging from 90 to 142 kg/kmol were tested in displacement‐controlled conditions, resul…
Abstract Ethylene terephthalate and ethylene naphthalate oligomers of defined degree of polymerization were synthesized via chemical recycling of the parent polymers. The oligomers were used as defined building blocks for the preparation of novel block‐ co ‐polyesters having tailored sequence compositions. The sequenc…
Ti‐based materials are frequently used worldwide for orthopedic implants. New β ‐type or glassy alloys with nontoxic alloying elements are investigated with expected improved biofunctionality. The surface regions and surface layers formed at the materials are decisive for the integration of the implant in the body. Th…
In this work, we will discuss the excitation and emission properties of Tb ions in a Silicon Rich Silicon Oxide (SRSO) matrix obtained at different technological conditions. By means of electron cyclotron resonance plasma-enhanced chemical vapour deposition, undoped and doped SRSO films have been obtained with differe…
Rigid poly(vinyl chloride) (PVC)/CaCO3 and PVC/liquid macromolecular modifier (LMM) coated CaCO3 (PVC/LCC) composites were both fabricated by melt mixing. The processability, micro‐structure, dynamic mechanical behavior and mechanical properties of PVC/CaCO3 and PVC/LCC composites were studied by using torque rheomete…
We have developed anomalous x-ray scattering (AXS) spectrometers, that employ intrinsic Ge detectors and crystal analyzers, at SPring-8. The use of LiF analyzer crystal provides us with an energy resolution of ~ 12 eV. Furthermore, it has been established that the use of AXS technique is essential to reveal the relati…